Apparatus for winding armature-coils.



1. c; SIMONSEN.

APPARATUS FOR WINDING ARMATURE COILS.

APPLICATION FlLED NOV- 1. 1913.

Patented Nov. 30, 1915.

Wa k asses MZW J OHAN CHARLES SIMONSEN, OF DETROIT, MICHIGAN, ASSIGNOBI TO CHALMERS MOTOR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

APPARATUS FOR WINDING ARMATURE-COILS.

Specification of Letters Patent.

Patented Nov. 30, 1915.

T 0 all whom it may concern Be it known that I, JQHAN CHARLES 81- MONSEN, a subject of the King of Norway, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Im rovements in Apparatus for Winding which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to apparatus for winding armature coils, and it is the object of the invention to obtain a construction by which coils may be wound, having both terminals leading from outer convolutions.

In the drawings: Figure 1 is a sectional side elevation of the winding mandrel; Fig. 2 is a front elevation with one of thesections removed; and Fig. 3 is a sectional plan view showing the manner of separating the mandrel sections to disengage the coil.

As above stated my improved machine is designed for the formation of armature coils so that both terminals lead from outer convolutions; Such a coil cannot be wound in the ordinary mannerof placing successive layers upon a spool,'for the reason that with such a method one terminal leads to an inner convolution and the other to an outer convolution. With my improved apparatus, however, the desired coils may be readily produced, the construction and operation being as follows A is a revoluble head.

B is a mandrel-mounted on said head, having spiral steps C C, etc., progressively decreasing in dimensions.

D is an outer mandrel section which is the reverse of the section B, being provided with a series of spiral steps E E, etc., progressively increasing in dimension. The steps arranged on the mandrel sections are each substantially 'equal in depth to the gage of the wire. It willof course be understood that diiferent sized wires will require a mandrel onwhich the steps are of the same size as the gage of the wire. I When the open coil is removed from the'mandrel, it is flattened so that the convolutions will telescope and fit snug within one another forming a very compact coil. The section D is detachably secured to the section B by suitable means, such as sleeving it upon-pins or guides F projecting centrally outward from .the section B and looking it in such rmature-Coils, of

position by cross-pins or keys G. Thus, normally, the inner section B and outer section D may be held in fixed relation during the rotation of the head A.

To wind the coil, one end is secured to the head A, as by inserting its end in an aperture H therein, and the mandrel is then rotated while the operator guides the wire in the spiral steps, forming an open coil with corresponding series of spiral convolutions. The mandrel sections D are then removed by disengaging the pins G, and this permits of disengaging the open coil, which may be subsequently flattened to tele scope the convolutions and produce a closed coil with both terminals leading from the outer convolutions.

QTo facilitate the removal of the wound coil from the mandrel, the opposite mandrel sectlons are not only separated from each other but are collapsed longitudinally to release the coils from the spiral steps. This collapsing of the mandrel sections is accomplished by forming each of the sections B and D of two members B B and D D.

' The member B is fixed to the head, but its slidable on a guide I on the head and is f separable from the section-B.- The section D is provided with dowels J for engaging with corresponding recesses in the section B, and the locking pin G for the section D has a wedge engagement therewith, which when the pin is driven in will move said section longitudinally. This movement will be transmitted to the section B through the dowels J 'so that both members B and D are moved outward. When the pins G are withdrawn these sections are permitted, to move inward again, which will release their engagement from the convolutions of the winding and permit of the ready disengagement of the coil.

What I claim as my invention is: 1. An apparatus for winding armature coils, comprising a revoluble mandrel having a series of spiral steps progressively decreasing in dimension, and a plurality of complementary removable sections having a series of spiral steps progressively increasing in dimension, and means for normally locking said sections in fixed relation permitting of disengagement for the removal of the coil.

' 2- An apparatus for winding armature coils, comprising a revoluble mandrel formed of a plurality of sections and provided with reverse series of spiral steps in difierent portions thereof, and means for normally locking said sections in fixed relation for the winding of the coil thereon, said locking means permitting of the collapsing and separation of said sections for the removal of the coil.

3. An apparatus for Winding armature coils, comprising a rotary support, a mandrel arranged upon the support having complementary sections having reversely arranged spiral steps, and means associated with the support and mandrel for collapsing the mandrel.

4. An apparatus. for winding armature COllS, comprising a rotary mandrel having a series of spiral steps, -a support for said mandrel, and means associated with said support and mandrel for collapsing the latter. I

5. An apparatus for Winding armature coils, comprising a revoluble mandrel havmg complementarysectlons with reversely arranged spiral steps, said mandrel being constructed and arranged to be collapsible to remove the coil therefrom, and means for maintaining the mandrel expanded.

6. An apparatus for winding armature wedge-shaped face adapted to have engage ment with one of the mandrel sections, and to be supported by the said shaft, said mandrel sections being adapted to be collapsed upon a movement of the dowel.

7. An apparatus for winding armature coils, comprising a revoluble mandrel having spiral steps thereon, means for supporting said mandrel, a dowel carried by said supporting means and adapted to collapse the mandrel on a movement thereof.

In testimony whereof I afiix my signatur in presence of two witnesses.

J OHAN CHARLES SIMONSEN.

Witnesses:

A. C. GIBsoN, CLARENCE S. REEF. 

